Curtain Size Calculator

Use the Curtain Size Calculator for a transparent, instant calculation with validated inputs and cited sources. For a query such as “Curtain Size Calculator”, enter the matching values and units below and review the stated assumptions.

Inputs

Results update as you type.

* Required
inx ≥ 0
inx ≥ 0
x ≥ 1
inx ≥ 0

Result

Results update as you type.

Total curtain width
120 in
Width per two-panel curtain
60 in
Curtain length
56 in

How to use this calculator

Enter the requested values and units.

Review the assumptions and any warnings shown with the result.

Use the result together with the cited source and your real-world requirements.

Formula

Compute totalCurtainWidth = windowWidth × curtainGatherFullnessMultiplier, panelWidth = totalCurtainWidth ÷ 2, and curtainLength = windowHeight + additionalCurtainLengthAllowance.

Worked example

Worked example: Inputs: Window width: 60 in; Window height: 48 in; Fullness multiplier: 2; Extra vertical drop: 8 in. Outputs: Total curtain width: 120 in; Width per two-panel curtain: 60 in; Curtain length: 56 in.

Assumptions and limits

  • The result depends on the values, units, and assumptions entered. It does not infer missing context.

Sources

Related calculators

Verification

How this calculator is checked

Trust comes from reproducible evidence, not model confidence. You can inspect the formula, assumptions, worked example, and cited sources on this page.

Frequently asked questions

How does the Curtain Size Calculator work?

Compute totalCurtainWidth = windowWidth × curtainGatherFullnessMultiplier, panelWidth = totalCurtainWidth ÷ 2, and curtainLength = windowHeight + additionalCurtainLengthAllowance.

What should I enter?

Window width, Window height, Fullness multiplier, Extra vertical drop

What should I verify?

Review the assumptions and any warnings shown with the result. The result depends on the values, units, and assumptions entered. It does not infer missing context.

Last updated 2026-08-25 · construction-curtain-size-v1 · opportunity-source-2026-08-24 · Published by YunFanLabs